An efficient synthetic route to construct ortho-substituted 1-phenyl-1H-pyrazole-4carboxaldehydes and the corresponding ethanones starting from 1-phenyl-1H-pyrazol-3-ol is described. Carbon-carbon bond-forming Pd-catalysed cross-coupling reactions were applied for the functionalisation of the intermediate pyrazole triflates. Detailed NMR spectroscopic investigations were undertaken with all obtained
描述了从 1-苯基-1H-
吡唑-3-醇开始构建邻位取代的 1-苯基-1H-
吡唑-4
甲醛和相应的乙酮的有效合成路线。碳-碳键形成 Pd 催化的交叉偶联反应用于中间体
吡唑三氟甲磺酸酯的官能化。对所有获得的产品进行了详细的 NMR 光谱研究。